Type-writing machine.



G. F. BALLOU.

TYPE WRITING MACHINE.

APPLICATION FILED $2112.24, 1901.

Patented July 27,1909.

WITNESEIEi rirrnisr oration.

GEORGE Fv BALLOU, OF NEW YORK, N; Y., ASSIGNOR TO WYCKOFF, SEAMANS & BENEDICT,

OF ILION, NEW YORK, A CORPORATION OF NEW YOR TYPE-WBZTIN G IHACHINE.

Specification of Iietters Eatent.

Patented July 2?, 1909.

Application filed September 24, 1907. .Serial No. 39 1,39.

useful Improvements in Type-Writing Ma-.

chines, of which the following is a specification.

My invention relates to typewriting machmesand more particularly to means for mounting the paper table, and'the objects thereof are to provide simple and eflicient i Fig. 1.

means for pivotally and detachably mounting the paper table in place and for exerting a spring pressure on the paper table to maintain it in normal position and to restore it to normal. position when. turned around its pivot-s and released.

To the above and other ends which will hereinafter appear, my invention consists of the features of construction, arrangements of parts and combinations of devices to be set forth in the following specification. and particularly pointed out in the appended claims.

In the drawings, Figure 1 is a detail vertical central sectional view taken through the carriage or platen frame of a typewriting machine embodying my invention. Fig. 2 is a fragmentary detail front elevation of the supporting rod for the paper table. Fig. 3 is a detail perspective view of the supporting brackets. Fig. 4 is a detail perspective view of'the frame which is secured to the paper table and by means of which the paper connected toits supporting pivots. Fi.g. 5 a fragmentary end elevation showing the connection between the paper table and its supporting brackets, with the paper table shown swung forward.

The carriage comprises a platen frame, the end plates. 1 of which are united'by a cross bar 2 and in which is journaled a platen shaft- 3 carrying a cylindrical platen t, the types being adapted to impactaga'inst the front face of the platen as indicatcd in a The simporting rod is formed with two upwardly extending lugs 5 flat-- tcned and slightly depressed on the upper face thereof as indicated at G for the reception of angular pivot carrying brackets 7.

Each of these brackets is provided with a substantially horizontally disposed arm or portion 8 slotted at 9 for the reception of a headed screw 10 threaded at its lower end into a tapped opening in the corresponding lug Son the supporting bar. This affords means for detachably mounting the brackets on the platen frame, the brackets being clamped between the upper faces of the lugs 5 and the heads of. the screws 10. Each bracket is prevented from turning on its screw 10 as a center by the engagement of the bracket with side walls or the depressed portion 6 in the lug allnough a slight fore and aft adjustment .of die brackets may be had. The lower depending portion of each bracket has an outwardly projecting arm which forms a pivot 11 that is flattened at opposite sides thereof for purposes which will hereinafter more clearly appear.

' A sheetmetal frmne, indicated as a whole by the reference numeral. 12 and shown in detail in Fig. 4, comprises a cross bar 13, securing arms 14- and spring arms 15. The frame is curved to correspond generally to the curvature of the paper table 1'6 as seen in side elevation as will clearly appear from an inspection of Fig. 1. The frame 12 is secured to the undcr-side of the paper table in any suitable manner as by rivets which extend through openings 17 in the frame and through like openings in the paper table. The cross bar 13 and arms 14 of the frame bear against the paper table, whc'reas the spring arms 15 are off-set by bends 18 so that they are maintained out of contact with the paper table and are spring-pressed to ward the paper table. The lower end of .each spring arm is bent to form a pivot hearing 19 that opens toward the paper table and forms a pocket-like recess for the reception of its cooperating pivot. ll. The walls of the pocket or bearing 19 in each spring" arm conform substantially to the shape of the flattened pivot received therein. The construction is such that each spring-arm rcccivcs its cmipcrating pivot in a bearing formed therein and presses the pivot between th spring arm and the pa shown in Fig. l and this spring pressure is exerted against the flat fare of the pivot to maintain the paper table in its normal posi per table as tion shown in Fig. 1. Should it be desired to turn the paper table for any reason, as for instance to give access to the'ns'ual tabulating or margin stops located in the rear of the machine and under the paper table the operator may swing the upper end of thepaper table forwardly against the pressure of the spring arms 15 and the paper table will turn on its pivot 11. \Vhen the paper table is released it will be restored to normal-position by the pressure of the spring arms. The construction is such that the paper table may if desired be detached from its supporting brackets by first turning the paper table from its normal position around its pivots 11. The effect of this is to press the lower ends of the spring arms away from the paper table so that anopening 20 is created be tween the ends 21 of the spring arms and the paper table as shown in Fig. 5 so that the paper table may be then pulled upwardly and forwardly and readily detached when desired from its supporting brackets.

From the foregoing description it will be seen that I have provided simple and efiicient means for pivotally mounting the paper table in place said means afiording a ready detachment of the paper table when desired by swinging the arms 15 away from the paper table to permit a removal of'the pivots from the pivot bearings in said arms.

Various changes may be made without departing from the spirit and scope of my invent-ion.

What I claim as new and desire to secure by Letters Patent, is

tion of a paper tab e, individual pivots carried and on which the paper table turns, spring bearings for the pivots, the spring bearings being carried by the other of said parts, and means whereby the spring bearings are efi'e'eftive to afford a connection or disconnectionbetween the paper table and the support therefor. v i" 2. In a typewriting machine, the combination of a paper table, a support thereior, pivots carried by one of said parts, and spring bearings for the pivots carried by the other of said parts, the spring bearings pressing 'on the pivots to press the paper table back to normal position. I 3. In a typewriting machine, the combination of a paper table, a support therefor, pivots carried by and fixed to one of said parts, spring bearings for the pivots, the spring bearings being carried by the other of said parts, and means whereby the spring bearings exert pressure to move the paper table to normal position and whereby the bearings and pivots may be separated to detach the paper table when desired.

4. In a typcwriting machine, the combinaa support therefor, by one of said parts tion of a paper table, a support therefor, pivots carr1ed by one of said parts, spring arms carried by the other of said parts, and means whereby said spring arms are sprung by a swinging movement of the paper table to positions where the ivots may be separated therefrom toafiord a ready detachment of the paper table.

5 In a typewritin machine, the combination of a paper tab e, a springcarried by said-paper table, a pivot for the paper table, a bearing in the spring to engage said pivot, and means whereby the spring exerts a pressure to move the paper table back to normal position.

(3. In a typewritin machine, the combination of a paper tabl e, paper table, pivot bearings formed in part by the paper table and in part by said spring arms, and pivots which are engaged by pivot bearings and on which the paper table turns. 4

7 In a typewriti'ng machine, the combination of a paper table, spring arms on said paper table, pivot bearings formed in part by the paper table and in part by said spring arms, and flattenedpivots seated in said bearings so that the pressure of said spring arms holds the paper table in normal position. I I

8.. In a typewritin machine, thecombination of a paper tab e, spring arms on said paper tab e, pocket-like pivot hearings in said spring arms, and ivots in said pocketlike bearings and Whi are pressed by the I springs against the paper table. 1. In a typewritin machine, the combina- S). In a typewriting machine, the combinaspring arms on said tion of a paper table, spring arms carried by said iaper table and having pivot bearings therein, brackets detachably mounted on the carriage and each carrying a pivot which is seated within a bearing in a spring arm and on which pivot the spring arm exerts a spring pressure to move the paper table back to normal position.

-10. In a typewritin machine, the combination of'a paper ta le, spring arms carried by said paper table and having pivot bearings there1n,brackets detachably mounted on the carriage and each carrying a :flattened pivot which 18 seated within a bearing'in a spring arm, the shape of the pivot bearings conforming generally to the shape of the pivot so that the spring arms exert a spring pressure on the ,paper table to hold it in its normal position.

11. In a typewritin machine, the combination of a paper tab e, a frame secured to the paper table and having spring arms, and pivots on which said paper table is mounted and against which the s'prin arms bear transversely of the axes of Sci pivots.

12. In a typewriting machine, the comb1- nation'of a paper table carrying spring arms,

of New York, in the c ouni zy of New York and State of New York, this 21st day of September, A. D. 1907.

and angular brackets on which the pa er Table is mounted, one arm of each brac et formlng a plvot and the other arm having an open ended "slot to receive a securing GEORGE F. BALLOU. screw, said spring arms belng coeperatwe Witnesses: with said pivots. CHARLES E. SMITH,

Signed at the borough of Manhattan, city i E.- M. WELLS. 

